The Mac Pro &lpar;Early 2009&rpar; can be configured with a single ATI Radeon HD 5870 graphics card upgrade kit, which requires the use of both auxiliary power connections.

These cards each have two Mini DisplayPort outputs and one dual-link DVI output for a total of three video ports. All three ports are available for simultaneous use, depending upon the type of connection.

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To connect up to two Mini DisplayPort displays and up to a 30-inch DVI display simultaneously, use the ports without any adapters.

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To connect two DVI displays, use the dual-link DVI port and the Apple Mini DisplayPort to DVI Adapter or the Apple Mini DisplayPort to Dual-Link DVI Adapter &lpar;sold separately&rpar;.

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To connect three DVI displays at once, you must use two Apple Mini DisplayPort to Dual-Link DVI Adapters &lpar;sold separately&rpar;.

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To connect up to three VGA displays simultaneously, use the Mini DisplayPort to VGA adapter and DVI to VGA adapters &lpar;sold separately&rpar;.

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Note: If you are using an Apple Mini DisplayPort to DVI adapter, only two displays are supported across the three ports. If you are connecting three displays, any DVI displays must be connected to either the Dual-Link DVI port or must use an Apple Mini DisplayPort to Dual-Link Adapter.